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Volatile Organic Compound Ratios as Probes of Halogen Atom Chemistry in the Arctic : Volume 7, Issue 4 (08/08/2007)

By Cavender, A. E.

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Book Id: WPLBN0003997680
Format Type: PDF Article :
File Size: Pages 37
Reproduction Date: 2015

Title: Volatile Organic Compound Ratios as Probes of Halogen Atom Chemistry in the Arctic : Volume 7, Issue 4 (08/08/2007)  
Author: Cavender, A. E.
Volume: Vol. 7, Issue 4
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Bottenheim, J. W., Biesenthal, T. A., Shepson, P. B., & Cavender, A. E. (2007). Volatile Organic Compound Ratios as Probes of Halogen Atom Chemistry in the Arctic : Volume 7, Issue 4 (08/08/2007). Retrieved from

Description: Department of Chemistry, Purdue University, West Lafayette, IN, USA. Volatile organic compound concentration ratios can be used as indicators of halogen chemistry that occurs during ozone depletion events in the Arctic during spring. Here we use a combination of modeling and measurements of [acetone]/[propanal] as an indicator of bromine chemistry, and [isobutane]/[n-butane] and [methyl ethyl ketone]/[n-butane] are used to study the extent of chlorine chemistry during four ozone depletion events during the Polar Sunrise Experiment of 1995. Using a 0-D photochemistry model in which the input of halogen atoms is controlled and varied, the approximate ratio of [Br]/[Cl] can be estimated for each ozone depletion event. It is concluded that there must be an additional source of propanal (likely from the snowpack) to correctly simulate the VOC chemistry of the Arctic, and that the ratio of Br atoms to Cl atoms can vary greatly during ozone depletion events.

Volatile organic compound ratios as probes of halogen atom chemistry in the Arctic

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